Ceiling-fan.



CEILING FAN.

APPLICATION FILED NOV. 29. l9l6.

Patented Dec. 10, 1918.

lated simultaneously STATES PATE oF IoE.

WILLARD M. MOEWEN, OF CHICAGO, ILLINOIS.

CEILING-FAN.

Application filed November 29, 1916. Serial 110. 134,037.

To all whom it'may concern Be it known that I, WILLARD M. MoEWpN, a citizen of the United States of America,

and a resident of Chicago, county of Cook,-

and State of Illinois, have invented certain new and useful Improvements in Ceilingmy prior Patent No. 1,214,198, granted J anuary 30, 1917, to provide an improved form of mounting for the device; and to provide an air circulating device of this kind which ifs particularly suitable for use as a ceiling An illustrative embodiment of this invention is shown in the accompanying drawings, in which:v

Figure 1 is a transverse sectional elevation of the improved .air circulating device, the

same being shown as suspended from the ceiling.

.Fig. 2 is a. side elevation of the'same'. Fig. 3 is a bottom plan of the same.

Fig. 4 is an enlarged detail, partly sectional, of the crank member and its reduction caring, the section being viewed from the plane of the line A-Aof Fig. 5.

Fig. 5 is a sectional elevation of the same.

The air circulating device herein shown and described is of the type wherein means are provided for positively tiltlng the blower mechanism in one plane, whereby it Wlll oscillate in a transverse plane by virtue of the gyratory forces which become active when the blower mechanism is tilted in said first mentioned plane.

In the constructionherein shown the main supporting frame is an annular member 1 of U-sha-ped cross section within which a ring member 2 is mounted on ball bearings 3, so that said ring member is free to rotate in its own plane and that of the supporting mem her 1.

Blower mechanism 4, which may be of any of the usual constructions including a motor (not shown) and fan blades 5, is tiltably mounted on the ring member 2 by means of trunnions 6 and 7. The trunnions are secured to the motor casing 8 and seated in bearings 9 and 10 integrally formed on the ring member 2, whereby the blower mecha- Specification' of Letters Patent.

Patented Dec. 1c, 1918.

. nism is pivotally supported so as to be tilted in a plane transverse to the axis of said trunnions and to the plane of; the ring member '2.

The tilting of the blower mechanism may be effected by any means whichmay be found suitable for that purpose. That illustrated in the drawings is in thenature of a crank member comprising a ball memberll carried by a shank or arm 12 eccentrically secured on a disk 13. The disk 13 is connected to the motor shaft 14 through the mediumof suitable reduction gearing 15 housed within the disk, as shown 1n Figs. 4 and 5.

In order thatthe crank member will eifect a straight back and forth tilting, the'ball member 11 is arranged to travelin a guideway 16 formed in ring member 2' in a longitudinally disposed position.

This form of -mounting is particularly suitable for ceiling fans,-and to that end a pla-te 17 is integrally formedon the annular member 1, which may be secured to the ceiling so as to'suspendthe frame in a vertically disposed position. The fan being mounted on one side of the center of the ring member in order to insure the fan being normally held with the motor axis vertical and the fan blades down. This is readily accom- .2 it is necessary to provide a counterweight plished by casting a web 18 on the ring member 2 inopposed relation to the fan balance the weight of that part of the blower .blades 5, and of suitable weight to counter- I mechanism which is on the opposite side of 1 the axis of said ring. v

A diagrammatic arrangement of electrical conducting means is shown in the drawings, which embodies a pair of slip rings 19 and 20 mounted on the ring member 2- in position to be engaged 'by a pair of brushes 21 and 22 mounted on the annular supporting member 1. The slip rings are connected to binding posts 23, from which conductors 24 lead to the motor. The

brushes are similarly connected with a source tive. The ring 2 being free to rotate in the annular supporting member 1, these gyratory forces react andcause the blower mechanism to oscillate back and forth in a vertias to be free to rotate in the plane thereof,

blower mechanism located wholly within said ring member and trunnioned thereon so as to be capable of tilting in a plane transverse to the plane of said ring member, and coacting means on said blower mechanism and ring member positively driven by said blower mechanism for tilting said blower mechanism, whereby gyratory forces react to cause said blower mechanism to oscillate with said ring member on said supporting member. v i

2. In a ceiling fan, the combination of an annular member of U-shaped cross section providing an annular groove in the inner face thereof, a plate rigidly connected to and suspending said member in a vertically disposed position, a ring member supported within said annular member so as to freely rotate in the plane of said annular member, blower mechanism located wholly within memoirs said ring member and trunnioned thereon so as to tilt in a vertical plane transverse to the plane of rotation of said. ring member, and coacting means on said blower mechanism and said ring member positively driven by said blower mechanism and adapted to tilt said blower mechanism in said transverse vertical plane, whereby gyratoryforces react to oscillate said blower mechanism vertically in the plane of said annular member.

3. in a ceiling fan, the combination of an annular member of U-shaped cross section providing an annular groove in the inner face thereof, a plate rigidly connected to and suspending said member in a vertically disposed position, a ring member supported within said annular groove so as to freely rotate in the plane of said annular member, blower mechanism located wholly within said ring member and trunnioned thereon so as to tilt in a vertical )lane transverse to the plane of rotation of said ring member, coacting means on said blower mechanism and said ring member positively driven by said blower mechanism and adapted to tilt said blower mechanism in said transverse vertical plane, whereby gyratory forces react to oscillate said blower mechanism vertically in the plane of said annular member, and a counterweight carried by said ring member adapted to normally urge said ring member into position to maintain said blower mechanism in a vertically disposed position.

Signed at Chicago this 27th day of November, 1916.

VJILLARD M. MCE WEN, 

